LLVM: llvm::RTDyldMemoryManager Class Reference (original) (raw)

#include "[llvm/ExecutionEngine/RTDyldMemoryManager.h](RTDyldMemoryManager%5F8h%5Fsource.html)"

Public Member Functions
RTDyldMemoryManager ()=default
RTDyldMemoryManager (const RTDyldMemoryManager &)=delete
void operator= (const RTDyldMemoryManager &)=delete
~RTDyldMemoryManager () override
void registerEHFrames (uint8_t *Addr, uint64_t LoadAddr, size_t Size) override
Register the EH frames with the runtime so that c++ exceptions work.
void deregisterEHFrames () override
virtual uint64_t getSymbolAddress (const std::string &Name)
Legacy symbol lookup - DEPRECATED!
JITSymbol findSymbol (const std::string &Name) override
This method returns a RuntimeDyld::SymbolInfo for the specified function or variable.
virtual uint64_t getSymbolAddressInLogicalDylib (const std::string &Name)
Legacy symbol lookup – DEPRECATED!
JITSymbol findSymbolInLogicalDylib (const std::string &Name) override
Default to treating all modules as separate.
virtual void * getPointerToNamedFunction (const std::string &Name, bool AbortOnFailure=true)
This method returns the address of the specified function.
Public Member Functions inherited from llvm::MCJITMemoryManager
virtual void notifyObjectLoaded (ExecutionEngine *EE, const object::ObjectFile &)
This method is called after an object has been loaded into memory but before relocations are applied to the loaded sections.
virtual void notifyObjectLoaded (RuntimeDyld &RTDyld, const object::ObjectFile &Obj)
This method is called after an object has been loaded into memory but before relocations are applied to the loaded sections.
Public Member Functions inherited from llvm::RuntimeDyld::MemoryManager
MemoryManager ()=default
virtual ~MemoryManager ()=default
virtual uint8_t * allocateCodeSection (uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName)=0
Allocate a memory block of (at least) the given size suitable for executable code.
virtual uint8_t * allocateDataSection (uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName, bool IsReadOnly)=0
Allocate a memory block of (at least) the given size suitable for data.
virtual TLSSection allocateTLSSection (uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName)
Allocate a memory block of (at least) the given size to be used for thread-local storage (TLS).
virtual void reserveAllocationSpace (uintptr_t CodeSize, Align CodeAlign, uintptr_t RODataSize, Align RODataAlign, uintptr_t RWDataSize, Align RWDataAlign)
Inform the memory manager about the total amount of memory required to allocate all sections to be loaded: CodeSize - the total size of all code sections DataSizeRO - the total size of all read-only data sections DataSizeRW - the total size of all read-write data sections.
virtual bool needsToReserveAllocationSpace ()
Override to return true to enable the reserveAllocationSpace callback.
virtual bool allowStubAllocation () const
Override to return false to tell LLVM no stub space will be needed.
virtual bool finalizeMemory (std::string *ErrMsg=nullptr)=0
This method is called when object loading is complete and section page permissions can be applied.
Public Member Functions inherited from llvm::LegacyJITSymbolResolver
void lookup (const LookupSet &Symbols, OnResolvedFunction OnResolved) final
Performs lookup by, for each symbol, first calling findSymbolInLogicalDylib and if that fails calling findSymbol.
Expected< LookupSet > getResponsibilitySet (const LookupSet &Symbols) final
Performs flags lookup by calling findSymbolInLogicalDylib and returning the flags value for that symbol.
Public Member Functions inherited from llvm::JITSymbolResolver
virtual ~JITSymbolResolver ()=default
virtual bool allowsZeroSymbols ()
Specify if this resolver can return valid symbols with zero value.
Static Public Member Functions
static void registerEHFramesInProcess (uint8_t *Addr, size_t Size)
Register EH frames in the current process.
static void deregisterEHFramesInProcess (uint8_t *Addr, size_t Size)
Deregister EH frames in the current process.
static uint64_t getSymbolAddressInProcess (const std::string &Name)
This method returns the address of the specified function or variable in the current process.
Protected Types
typedef std::vector< EHFrame > EHFrameInfos
Protected Attributes
EHFrameInfos EHFrames

Definition at line 61 of file RTDyldMemoryManager.h.

◆ EHFrameInfos

llvm::RTDyldMemoryManager::RTDyldMemoryManager ( ) default

Referenced by operator=(), and RTDyldMemoryManager().

◆ RTDyldMemoryManager() [2/2]

References RTDyldMemoryManager().

◆ ~RTDyldMemoryManager()

llvm::RTDyldMemoryManager::~RTDyldMemoryManager ( ) overridedefault

◆ deregisterEHFrames()

void llvm::RTDyldMemoryManager::deregisterEHFrames ( ) overridevirtual

◆ deregisterEHFramesInProcess()

void llvm::RTDyldMemoryManager::deregisterEHFramesInProcess ( uint8_t * Addr, size_t Size ) static

◆ findSymbol()

JITSymbol llvm::RTDyldMemoryManager::findSymbol ( const std::string & Name) inlineoverridevirtual

This method returns a RuntimeDyld::SymbolInfo for the specified function or variable.

It is used to resolve symbols during module linking.

By default this falls back on the legacy lookup method: 'getSymbolAddress'. The address returned by getSymbolAddress is treated as a strong, exported symbol, consistent with historical treatment by RuntimeDyld.

Clients writing custom RTDyldMemoryManagers are encouraged to override this method and return a SymbolInfo with the flags set correctly. This is necessary for RuntimeDyld to correctly handle weak and non-exported symbols.

Implements llvm::LegacyJITSymbolResolver.

Definition at line 101 of file RTDyldMemoryManager.h.

References llvm::JITSymbolFlags::Exported, and getSymbolAddress().

◆ findSymbolInLogicalDylib()

JITSymbol llvm::RTDyldMemoryManager::findSymbolInLogicalDylib ( const std::string & Name) inlineoverridevirtual

◆ getPointerToNamedFunction()

void * llvm::RTDyldMemoryManager::getPointerToNamedFunction ( const std::string & Name, bool AbortOnFailure = true ) virtual

This method returns the address of the specified function.

As such it is only useful for resolving library symbols, not code generated symbols.

If AbortOnFailure is false and no function with the given name is found, this function returns a null pointer. Otherwise, it prints a message to stderr and aborts.

This function is deprecated for memory managers to be used with MCJIT or RuntimeDyld. Use getSymbolAddress instead.

Definition at line 280 of file RTDyldMemoryManager.cpp.

References getSymbolAddress(), and llvm::report_fatal_error().

◆ getSymbolAddress()

virtual uint64_t llvm::RTDyldMemoryManager::getSymbolAddress ( const std::string & Name) inlinevirtual

◆ getSymbolAddressInLogicalDylib()

virtual uint64_t llvm::RTDyldMemoryManager::getSymbolAddressInLogicalDylib ( const std::string & Name) inlinevirtual

◆ getSymbolAddressInProcess()

uint64_t llvm::RTDyldMemoryManager::getSymbolAddressInProcess ( const std::string & Name) static

◆ operator=()

References RTDyldMemoryManager().

◆ registerEHFrames()

void llvm::RTDyldMemoryManager::registerEHFrames ( uint8_t * Addr, uint64_t LoadAddr, size_t Size ) overridevirtual

◆ registerEHFramesInProcess()

void llvm::RTDyldMemoryManager::registerEHFramesInProcess ( uint8_t * Addr, size_t Size ) static

◆ EHFrames

EHFrameInfos llvm::RTDyldMemoryManager::EHFrames protected

The documentation for this class was generated from the following files: